Pontiac Grand Prix Problem Report
Pontiac Grand Prix Check Engine Light With Code P0171 and/or P0174
The exhaust gas recirculation (EGR) tube which connects the EGR valve to the intake manifold may develop an engine vacuum leak, causing the Check Engine Light to illuminate with code P0171 and/or P0174 stored.
Yes I just had it hooked up to see why my engine light came on and it was the ETR, I am beginning to believe the car is like my old FORD FIX ON ROAD DAILY> - Visitor
How can one determine if the EGR valve and solenoid are bad? Are both replaced simultaneously?
I've owned this car for 4 years now and since I bought it I've replaced the gas cap 5 times try...
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
The intake manifold gasket may develop and external engine oil or coolant leak. In some cases,...